Stay-strip.



WINTHROP L. CARTER, OF NASHUA, NEW HAMPSHIRE;

STAY-STRIP.

To all whom it may concern:

Be it known that I, WINTHROP L. CARTER,

a citizen of the United States, residing at Nashua, county of Hillsboro, State of New Hampshire,-have invented a certain new and useful Improvement in Stay-Strips, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention has for its object animproved stay strip of the'type which is adapted to be applied to corners of boxes, cartons or the like for the purpose of securing the adjacent sides together or to be used in binding boxes, blocks, tablets, etc. The stay strip now commonly employed for these purposes consists of paper or cloth or a combination of paper and cloth. As is well known to those skilled in the art stay strip when on a box is subjected almost entirely to a lateral or transverse strain which tends to break the fibers of the strip along the line of fold and is not subjected to a longitudinal strain to any appreciable extent. This is also the case with stay strip which is used for purposes other than in the manufacture of boxes. For this reason it has been necessary to use a material for stay strip having the required strength to withstand the transvere strain to which it is subjected although the strip is not subjected to any considerable longitudinal strain. This is true of a paper strip and for all practical purposes of a cloth strip for while it is possible to produce a stay strip of cloth in-which the weft is stronger than the warp and in this manner to provide a strip having greater lateral tensile strength than longitudinal tensile strength cloth is not commercially manufactured in this manner. As commonly manufactured the weft or filler of cloth has less tensile strength than the warp and therefore to obtain cloth for stay strip in which the weft is stronger than the warp is very expensive for it must necessarily be specially produced for this purpose. For this reason stay now commonly employed is provided with a greater longitudinal strength than is necessary and is, therefore, made from1 unnecessarily heavy and expensive materia The object of my present invention is to.

provide a stay strip which may be produced of relatively light paper, cloth or other suitable flexible fabric and which is so arranged that it is possessed of greater tensile strength Specification of Letters Patent.

Patend Oct. 3, 19 16.

Application filed January 14, 1916. Serial No. 72,049.

laterally than longitudinally. In this manner I am enabled to produce a light inexpensive strip which will have the required strength to withstand the lateral strain to which it is subjected.

My invention will be fully understood from the following description when taken in connection with the accompanying drawings and the novel features thereof will be pointed out and clearly defined in the claims at the close of this specification.

In the drawings Figure 1 is a view in perspective of a box provided with the stay strip embodying my invention. Fig. 2 is a view in perspective of a roll of stay strip embodying my invention. Fig. 3 is an enlarged detail view in perspective which is greatly exaggerated showing asection of my improved stay strip. Fig. 4 is a view simi- W lar to Fig. 3 showing a modified form of stay strip embodying my invention.

Having reference to the drawings,there is shown at 11 a stay strip embodying my invention which in Fig. 2 is shown wound E9 in a roll 12 and in Fig. 1 is shown applied to the corners of a box or carton 13. The stay strip 11 may consist either of paper or cloth or of a combination of paper and cloth or any othersuitable material. The 35 material of which the stay strip consists is provided at intervals with transverse reinforced parts preferably consisting of tucks or folds 14 which may be formed in any well known manner, as by machine or the like. W The tucks 14 are formed transversely of the length of the strip but not necessarily at right angles thereof and are arranged at predetermined. though not necessarily regular intervals.

The tucks are produced by folding and overlapping the strip so as to obtain three thicknesses of material numbered 15, 16 and 17 respectively. The adjacent surfaces of each of the layers 15-, 16 and 17 are preferably secured together by a suitable adhesive as shownin Fig. 3 or may be secured together in any well known manner as by stitching 19 as shown in Fig. 4. The tucks thus formed may be readily and rapidly produced and are preferably creased flat under pressure so that the strip is given a substantially uniform and level surface.

A strip constructed in the manner hereinabove described is provided with a series of n. transverse strengthened portions in which the material is overlapped preferably by the formation of tucks. This enables a strip to be produced from a light inexpensive material having a relatively great lateral strength which is equal to that of a strip composed of heavy expensive material.

What I claim is: v

1. As a new article of manufacture, the herein described improved stay strip for cartons or the like, comprising a str1p of fabric having at intervals throughout its length, a series of transverse reinforced portions each of which consists of a plurality of thicknesses of the said fabric.

2. As a new article of manufacture, the

herein described improved stay strip, for 15 cartons or the like, consisting of a strip of fabric having a series of transverse, secured tucks formed therein. I

3. As a new article of manufacture, the herein-described improved stay strip, .for 20 cartons or the like, comprising a strip of fabric having a series of transverse tucks formed therein, the adjacent surfaces of the folded fabric forming said transverse tucks being secured together by an adhesive.

In testimony whereof I aflix my signature.

WINTHROP L. CARTER. 

